我安装FCK后不能使用

我装的是JoomlaFCK_editor_plugin_v2.6.1_chinese.zip
安装并设置成默认编辑器后，在创建文章的页面提示:
Please beaware there is a newer version of the JoomlaFCK Editor which can be downloaded from www.joomlafckeditor.com
.
Please note the above message will only displayed to Administrators and above and cam be turned off in the Plugins Advance settings.
unknown toolbar item "formatsource"
unknown toolbar item "istyles"
unknown toolbar item "formatsource"